This is an LED turn signal flasher. This unit is designed to restore the flash rate of the turn signals to a normal pace if any incandescent lamps are replaced with LED's. If you change any of your turn signal bulbs to LED's, you remove the load that the flasher needs to have the correct rate. The easy (and less correct) way to fix this is to add a 'load equalizer'. This is nothing more than ceramic resistors. They create heat and have to be mounted away from plastic. Our LED flasher is self regulating with it's onboard SMD logic circuit so, it doesn't care if it is flashing LED's or incandescent bulbs. It's DOT approved and rated at 20 amps so you can continue to use regular bulbs too. This is a plug and play unit that will fit all Goldwing GL1800's and F6B's from 2001-2017. The unit comes with one plug that will be used on 2001-2005 bikes and another plug that will be used on 2006-2017 bikes. We are told that these also plug directly into and work perfectly on the 1988-2000 GL1500's as well. 08110